418 THE THYEOID AND ADRENALS. 



TUMORS. 



Sarcoma, glioma, and endothelioma occur in the adrenals. 



Neuroma. Gauglionic neuromata have been described by Weichsel- 

 baum and Freeman. 



Hyperplasia of the gland tissue (adenoma or struma suprarenalis lipo- 

 matosa), with fatty degeneration in the form of circumscribed nodules, 

 is of occasional occurrence. 



Adenomata of the adrenals, resembling in type the structure of the 

 cortex, may form as large vascular tumors, often hsemorrhagic, which 

 may invade the neighboring vessels and form metastases. Some of the 

 so-called adenomata of the kidney are probably adenomata of displaced 

 accessory adrenals (see page 644). 



Carcinoma is not common, but may be primary or secondary. ' 



1 For bibliography of primary malignant tumors of the adrenals, see Ramsay, Johns 

 Hopkins Hospital Bulletin, vol. x., p. 20, 1899. 



